US2496419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of cyclopropane
Assignee: Dow Silicones Corp
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Filing: 1949-06-03
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Granted: 1950-02-07
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Expires: 1969-06-03
Abstract
No abstract record available.
Inventors
- 👤 Leo H Sommer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:53
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/32; C07C1/321; C07C2601/00; C07C2601/02; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/93; Y10S585/931
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
THE METHOD OF PRODUCTS CYCLOPROPANE WHICH COMPRISES CONTACTING A COMPOSITION OF THE GENERAL FORMULA R3SI (CH2)3X, IN WHICH EACH R REPRESENTS A SUBSTITUENT OF THE GROUP CONSISTING OF ALKYL AND MONOCYCLIC ARYL AND X PRESENTS A SUBSTITUENT OF THE GROUP CONSISTING OF CHLORINE AND BROMINE, WITH AN ALUMINUM HALIDE, WHEREBY THE SILANE IS DECOMPOSED WITH THE FORMATION OF A COMPOSITION OF THE FORMULA R3SIX AND CYCLOPRPPANE.
Claim 2
Independent Claim
66 words
THE METHOD OF PRODUCTS CYCLOPROPANE WHICH COMPRISES CONTACTING A COMPOSITION OF THE GENERAL FORMULA R3SI (CH2)3X, IN WHICH EACH R REPRESENTS A SUBSTITUENT OF THE GROUP CONSISTING OF ALKYL AND MONOCYCLIC ARYL AND X PRESENTS A SUBSTITUENT OF THE GROUP CONSISTING OF CHLORINE AND BROMINE, WITH AN ALUMINUM HALIDE, WHEREBY THE SILANE IS DECOMPOSED WITH THE FORMATION OF A COMPOSITION OF THE FORMULA R3SIX AND CYCLOPRPPANE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-06 | 1953-08-08 | 1954-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-06 | 1957-08-08 | 1958-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-06 | 1961-08-08 | 1962-02-07 | $7700.00 | Window Closed / Lapsed |